Raman scattering from soft phonons in NdP5O14 |
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| Authors: | WK Unger |
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| Institution: | Department of Physics, Simon Fraser University, Burnaby, B.C., Canada V5A 1S6 |
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| Abstract: | Raman spectra of NdP5O14 were recorded between 4.2 and 600 K and analyzed. The monoclinic-orthorhombic phase transition temperature was determined to be 420 K by measuring the energy of an Ag-B2g and a Bg-B3g soft optic phonon mode as a function of temperature (symmetries refer to the monoclinic and orthorhombic phase, respectively). Coupling of these optic phonons to the soft acoustical phonon which is associated with the phase transition is discussed. |
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